The grand vision of Tim Barners-Lee, director of the World Wide Web Consortium (W3C) founded in 1994, of changing the nonsemantic Web (Web 1.0, Web 2.0) to semantic Web (Web 3.0) will connect all the Web sites and will make their systems interoperable. Though this system has not been fully matured yet, the goal of utilizing the full potential of the Web by creating an interoperable knowledge whole is not far from reach. With the emergence of various Web technologies and innovative concepts of using the Web to its fullest potential, the Web is evolving fast toward an intelligent Web systems. Ideally the intelligent Web systems will be a combination of a semantic Web and various Web services where the computers can automatically process the Web contents and integrate their services. This paper reports which Web technologies and protocols succeeded in realizing the current Web and speculate what is going to be the possible future Web architecture and its social impact.